1,720,963 research outputs found
S-Adenosilmetionina (SAMe): Neurofarmacologia e impiego nel trattamento dei disturbi depressivi
No full text
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
La validazione dell'AIMIT
No full textLa teoria multi-motivazionale dei Sistemi Interpersonali costituisce la cornice di riferimento dello studio presentato, quale prima fase di validazione dell'AIMIT. I risultati forniscono una prima evidenza empirica dell'affidabilità di tale metodo di studio dei SMI e riconfermano l'importanza della ricerca sulla motivazione interpersonale e sull'intersoggetività nella prospettiva cognitivo-evoluzionista
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
A 2 and 3.5-year naturalistic follow-up study of patients with unipolar depressive disorders. [Uno studio naturalistico di follow-up a 2 e 3,5 anni in pazienti con disturbi depressivi unipolari].
No full textIntroduction. Studies on unipolar depression show high rate of relapse and a substantial risk of chronicization. Methods. 2 and 3.5-year follow-up assessment using a telephone clinical interview which included the GAF and the 15-items HAM-D (have been eliminated 2 items of visual valuation). Results. 116 subjects (42 m., 74 f.) who were included in the study are presented. During the first year, 25% dropped out soon after the first visit while 21% dropped out before being appropriately taken in charge by the psychiatric service. Only 17% showed a satisfactory course at the end of first 12 months. 86% of subjects who signed informed consent for the follow-up (n=100) were contacted after 2 years and 73% after 3.5-year follow-up. Fifty-one percent of patients had a recurrency, and 58 percent showed sub-threshold or residual symptoms after 3.5-year follow- up. The persistence of depressive symptoms was also associated to a higher incidence of intercurrent episodes, with a longer mean duration and worse GAF score. Discussion. Though effective antidepressive treatment had been appropriately prescribed to most patients, long-term outcome is still unsatisfactory, given that more than half of the sample had relapses and 46% still show residual depressive symptoms after two years. Long-term therapy of unipolar depression should therefore consider specific treatment of sub-threshold or residual symptoms that are not effectively relieved by drug treatment alone
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